The House of Lords business for Monday 22 November begins with:
Lord Green of Hurstpierpoint will be introduced and
The Rt Hon Michael Ancram will be introduced as a Baron.
http://www.publications.parliament.uk/pa/ld/ldordpap.htm
It is interesting to note that Michael Ancram - the Marquess of
Lothian - will be having an introduction. Previously, whenever a
hereditary peer excluded from the House under the 1999 Act has
returned as a life peer, he has not had an introduction as a baron,
but has simply taken the oath under the new title. See here in April
2000:
http://www.publications.parliament.uk/pa/ld199900/minutes/000419/ldminute.htm
Earl of Mar and Kellie (Lord Erskine of Alloa Tower)
Lord Ponsonby of Shulbrede (Lord Ponsonby of Roehampton)
Both take the oath without an introduction ceremony.
Ancram's situation is unprecedented, as he is the first hereditary
granted a life peerage who didn't sit in the House prior to 1999, but
it still seems a little odd that he will have an introduction. Unless,
that is, they are to continue the pretence that he isn't a marquess at
all. If that's the case, I for one will feel a little disappointed!